Glue applying apparatus for paper cup making machines



Sept. 5, 1950 P. E. WIXON ET AL GLUE APPLYING APPARATUS FOR PAPER CUP MAKING MACHINES Filed July 11, 1949 3 Sheets-Sheet 1 Mum e Z a WW ATTORNEY Sept. 5, 1950 P. E. WIXON ET AL 2,521,110

GLUE APPLYING APPARATUS FOR PAPER CUP MAKING MACHINES Filed July 11, 1949 5 Sheets-Sheet 2 DEATH- ATTORNEY.

P 1950 P. E. WIXON ET AL ,5 1,110

GLUE APPLYING APPARATUS FOR PAPER CUP MAKING MACHINES Filed July 11, 1949 :5 Shets-Sheet 3 as 55 29 A 6 l 25: 11::

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ATTORNEY.

Patented Sept. 5, 1950 GLUE APPLYING APPARATUS FOR P AI ER CUP MAKING MACHINES Paul E. Wixon, Reisterstown, and Clarence E. Chapman, Baltimore, Md., assignors to Joseph Shapiro Application July 11,1949, Serial No. 104,095

4 Claims. 1

In general, our present invention seeks to provide improvements in the glue applying apparatus disclosed in Letters Patent No. 1,766,420, issued June 24, 1930, and that disclosed in our application for patent filed January 6, 1948, Ser. No. '148.

In the machines of the patent and the application aforesaid there is provided means for applying glue to the cup body blank along one longitudinal edge and across the blank where the cup bottom is to be secured. No provision is made in those machines whereby the gluing device can be adjusted so that cups of different heights and base diameters can be made on the same machine to produce cups of different content. capacities. It is therefore an object of the present invention to provide the necessary mechanism by means of which the one gluing apparatus can be used for gluing blanks of different sizes and capacities.

A further object is to provide for changing over those glue applying mechanisms of our prior application aforesaid to contain the present improvements with a minimum of additional and substitute parts.

Other objects will in part be obvious and in part will be pointed out hereinafter.

To the attainment of the aforesaid objects and ends invention resides in the novel features of construction, combination and arrangement of parts, all of which will be first described in detail and then will be specifically pointed out in the appended claims, reference being had to the accompanying drawings in which:

Fig. l is a top plan view of the improved gluing mechanism and the gluing table top.

Fig. 2 is a side elevation of the same, parts being in section.

Fig. 3' is a cross section on the line 3-3 of Fig. 1.

Fig. 4 is a detail cross section on the line 44 of Fig. 1.

Fig. 5 is a detail section; on the line 3-5 of P 8. 1. 1

Fig. 6 is a detail horizontal section on the line H of Fig. 3.

In the drawings, like letters and numerals of reference indicate like parts in all the figures.

As shown in Fig. '7 of the patent, and in Fig. 1 of the application aforesaid the body blank (a in Patent No. 1,766,420) is carried to the gluing mechanism by a rotary turret having blank grippers orflngers (235 in aforesaid patent) and as theypass the gluing station, thin bands or lines of glue are applied to the blanks, as will later more fully appear.

The mechanism for applying glue to the body blanks comprises a glue wheel drive base 5 on which is mounted a seam glue wheel slide base 3. A glue box i0 is removably mounted on a bracket II that is secured to the base 5. 4

Mounted on the cam shaft 92 of a paper cup making machine is a worm drive gear l3 that meshes with and drives a gear l4 on a countershaft 15 that is journalled in a. bearing 8 on the gear housing I that is mounted on the underside oi!v the top of base part i. The shaft l5, within the housing 1 carries a drive gear it that meshes with a, driven gear I! on a driven'shaft i9 (Fig. 2). The shaft is is journalled in bearings 20, 2|, formed integrally with the hollow base 5. At its upper end the shaft 19 carries a beveled drive gear 56 which meshes with a driven gear 51 on a bottom glue wheel shaft 53 that is joumalled in bearings 54', 55 in the glue wheel slide base 3. Within the base 5 the shaft l9 carries a bevel gear 22 that meshes with a pinion 23 on the seam glue wheel shaft 24 that is journalled in a fixed bearing 26 and a, removable bearing 25 on the glue box ID. A glue wheel 21 is mounted on the shaft 24 and projects through the glue box cover 23 and a, glue wheel scraper 30 mounted on the cover 29. Packing washers 28 are provided to protect the shaft and bearings from contact with the glue in the box ill (see Fig. 3). The glue box It has a dove-tail slidable connection l2 with a bracket H and is held in position by means of a set screw 3| (Fig. 2).

Suitably secured to the base 3 are slide guides 32 between which a glue wheel slide 33 is mounted (Figs. 2, 3). An arm 34 is formed with the slide 33 and has a stud 35 on which a rubber glue applying roller 38 is mounted and is heldin place on the stud by locking plate 36. Movement of the slide 33 in one direction is arrested by an adjustable bumper 31.

39 is the bottom glue wheel applying shaft which is journalled in bearings 40 attached to the base 3 (Figs. 2, 3).

Torsion springs 42 serve to move the shaft 33 counterclockwise in Fig. 3 to raise the glue applying roller 38 to a return or normal elevated position while the clockwise or glue applying position is obtained by a segment gear 44, spring collars 4| being provided on the shaft 39 to which one end of springs 42 is attached, the other end of the spring being suitably anchored The segmental gear 44 is pivoted on a stud 4'5 and carries a stud 45 on which a cam roller 41 is mounted so as to engage the bottom glue wheel operating cam CI The cam Cl is mounted on the shaft is.

A glue applying roller II is mounted on a stud II on an arm II that is carried by shaft 8!. The roller it normally rides in contact with a glue box wheel II that is carried on a shaft II. The shaft I8 is journalled in a fixed bearing I4 and a removable hearing I hereinbefore mentioned. The glue box 82 has a cover 58 (Fig. 1) and a cover adjusting screw it, and latch Cl is provided as shown.

On the shaft 1's and located within the base I is a gear '2 which meshes with cam gear 64 that is journalled on a stud 83 and carries an operating cam 65. The gear 64 and cam 65 may be formed integrally or separately and suitably secured together to turn as one (see Fig. 3).

ti is a cam roller arm which is secured to a I shaft 68 that is Journalled in a suitable bearing II in the base 5. The shaft 69 projects up into the base 6 where it carries a torsion spring I! one end of which is anchored to a stud I! on the base i and the other end is anchored to a stud 13' on an arm H. The arm 66 has a stud ll on which the seam glue wheel operating cam roller 68 is iournalled.

The arm ll carries a trunnion block I4 on a pin II and to which a glue wheel slide connecting link It is pivoted. The glue wheel slide 33 has lugs is secured to it. The connecting link It connects to the lugs 11 via a pin 18, a compression spring ll being provided for the usual purposes, as indicated in Fig. 1.

The gluing mechanism just described is timed so that the wheel 50 will be swung down onto a cup body blank to apply glue for the bottom while the blank is carried around over the table top 3 by the blank conveyor turret; the roller II is operated to apply the seam glue after the blank conveyor turret has stopped.

So far as described, the construction and operation are like that of the application aforesaid.

In applying our present invention we substitute for the original shaft is a longer one, and for the original gear 43 a wider one. We also add a collar 8. and a push or return spring ll which continuously urges shaft 38 from left to right in Fig. 2, a stop collar 32 and grooved collar I3 being also mounted on the shaft.

A cam carrying disc It carries the bottom glue wheel operating cam 8| as before, and it also carries a bottom glue wheel applying shaft shifting cam II.

A bearing bracket 86 is secured to the glue wheel drive base and carries a shaft 81 on which a roller carrying arm 88 is secured. The arm ll has a cam-engaging roller 9| to engage the cam It.

A forked lever II is secured to the shaft 81 and has rollers 00 to enter the groove of the collar 83.

The cams I and 85 are so timed that as soon as the bottom glue applying roller 50 is brought into contact with the blank a the shaft 38 will be moved axially back and forth as the blank is glued to compensate for the curvature of the bottom edge of the blank. By simply changing cams II the length of the longitudinal or back and forth movement of the shaft 39 can be adiusted to blanks of diflerent curvatures. The gear 48 is made wide enough for all size cups to be made by the one machine, 1. e., to allow for the maximum longitudinal movements of shaft". The rotary turret which carries the blanks a past the glueing mechanism has a stepby-step movement with a dwell between each step. when the turret is turning and Just as the advance end of the blank comes below the roller I0, that roller is swinging down into contact with the'blank and is held so during the travel of the blank to the position shown in Fig. l, whereupon the turret stops, roller 50 is raised, and roller is is brought forward onto the blank and is moved toward the axis of the turret to apply the line of glue to the short or seam side of the blank. In other words, the line of glue along the inner longitudinal edge of the blank is applied while the turret is moving the blank counterclockwise beneath the glueing mechanism while the line of glue along one side edge is applied during the dwell period.

From the foregoing description, taken in connection with theaccompanying drawings, it is thought that the construction, operation and advantages of our invention will be clear to those skilled in the art to which it appertains.

What we claim is:

1. In a paper cup making machine having a glue wheel drive base and means to apply a line of glue to the bottom of a cup body blank; the improvement which comprises a bottom glue wheel applying shaft having a roller carrying arm, a roller on said arm, and means including a glue box wheel drive shaft for rotating said bottom glue wheel applying shaft to apply said roller to the blank, and means for moving said shaft longitudinally back and forth to cause said roller to follow the bottom edge curvature of blanks of different bottom diameters.

2. In a paper cup making machine having a glue wheel drive base and means to apply a line of glue to the bottom of a cup body blank; the improvement which comprises -a bottom glue wheel applying shaft having a roller carrying arm, a roller on said arm and means including a glue box wheel drive shaft for rotating said bottom glue wheel applying shaft to apply said roller to the blank, and means for moving said shaft longitudinally back and forth to cause said roller to follow the bottom edge curvature of blank; of different bottom diameters, said last named means including a cam on said glue box wheel drive shaft, a bracket on said glue wheel drive base, a lever pivotally mounted on said bracket and having one arm provided with a cam-engaging roller to engage said cam and another arm operatively connected with said bottom glue wheel applying shaft.

3. In a machine of the class described, a supporting structure, a glue box wheel drive shaft mounted on said supporting structure. means for turning said glue box wheel drive shaft, a bottom glue wheel applying shaft having a glue applying roller arm and glue applying roller, means to mount said bottom glue wheel applying shaft, a lever mounted on said supporting structure and having a ear segment on one of its arms and a cam roller on the other of its arms, a cam on said glue box wheel drive shaft with which said cam roller engages, a gear on said bottom glue wheel applying shaft meshing with said gear segment, means continuously tending to move said bottom glue wheel applying shaft about its axis in one direction to raise said glue applying roller, a bottom glue wheel applying shaft shifting cam on said glue box wheel drive shaft, a bearing bracket on said supporting structure, a rock shaft journalled in said bearing bracket, a roller carrying arm secured to said rock shaft and having a cam roller to engage said bottom glue wheel applying shaft shifting cam, a second applying shaft, a lever mounted on said supporting structure and having a gear segment on one of its arms and a cam roller on the other of its arms, a cam on said glue box wheel drive shaft with which said cam roller engages, a gear on said bottom glue wheel applying shaft meshing with said gear segment, means continuously tending to move said bottom glue wheel applying shaft about its axis in one direction to raise said glue applying roller, a bottom glue wheel applying shaft shifting cam on said glue box wheel drive shaft, 9, bearing bracket on said supporting structure, a rock shaft journalled in said bearing bracket, a roller carrying arm secured to said rock shaft and having a cam roller to engage said bottom glue wheel applying shaft shifting cam, a second arm secured to said rock shaft and an operative connection between said second arm and said bottom glue wheel applying shaft for moving the same along its axis in one direction and a spring on said bottom glue wheel applying shaft continuously tending to move said shaft along its axis in the opposite direction, all in timed relation with the turning movements of said last named shaft about its axis.

PAUL E. WIXON.

CLARENCE E. CHAPMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,487,140 Beaver Mar. 18, 1924 2,272,073, Von Sydow et a1 Feb. 3, 1942 2,346,158 Dyer Apr. 11, 1944 2,494,176 Howard Jan. 10, 1950 

